<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>css选择器</title>
    <style>
        h1{
            color: bisque;
        }
        .class{
            color: yellow;
        }
        #id{
            color: lightgray;
        }
    </style>
</head>
<body>
    <h1>标签选择器</h1>
    <p class="class">类选择器</p>
    <div id="id">id选择器</div>
</body>
</html>
